USA TODAY Jumbo Puzzle Book 2: 400 Brain Games for Every Day
399 Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young.
Ultimate Mind Games: With Over 400 Puzzles (Puzzle Books)
Sudoku Puzzle Book Volume 1: 200 Puzzles
Puzzle Books for Adults: Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young